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Carbon-ceramic composite brake disc and preparation method thereof

A carbon-ceramic composite material and brake disc technology, which is applied in the field of carbon-ceramic composite material and brake disc preparation, can solve the limitations of carbon-ceramic composite brake disc manufacturing and popularization and application, long preparation process cycle, and low material mechanical properties And other problems, to achieve the effect of improving anti-oxidation performance, reducing wear, and pedal feeling comfortable

Active Publication Date: 2014-02-05
HUNAN SHIXIN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most brake discs are made of cast iron, and there are the following problems in practical applications: (1) poor wear resistance and fast wear; (2) poor heat dissipation, repeated braking will cause the braking force to be reduced due to heat Obvious loss; (3) heavier weight
Among the above processes (1) and (3) the preparation process is long, (2) easily lead to carbon fiber silicification damage, (4) and (5) the mechanical properties of the materials prepared are low, which makes the manufacture of carbon-ceramic composite brake discs and promotional applications are restricted

Method used

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  • Carbon-ceramic composite brake disc and preparation method thereof
  • Carbon-ceramic composite brake disc and preparation method thereof
  • Carbon-ceramic composite brake disc and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The PAN-type T700 (12K) carbon fiber bundles produced by Japan Toray Co., Ltd. (Toray) were used, and the carbon fiber bundles were passed through the liquid furan resin at a wire speed of 20mm / s, dried and cut to obtain a modified 15mm length. carbon fiber. Phenolic resin powder with particle size 99.5%, silicon powder with average particle size of 30nm, short carbon fiber with 15mm and absolute ethanol by mass percentage: 30% carbon fiber, 9% silicon powder, 51% After mixing the phenolic resin and 10% absolute ethanol evenly, put it into a mold designed according to the size of Changfeng CS6 brake disc for automobiles, hot-pressing at a pressure of 2.0Mpa and a temperature of 140°C, and the pressure holding time is 30min. After curing at 120°C for 24h, the density was 1.26g / cm 3 The carbon fiber reinforced blank (CFRP) has 32 cooling channels. The obtained carbon fiber reinforced green body (CFRP) was then carbonized for 38 hours under an argon protective atmosphere...

Embodiment 2

[0058] The PAN-type T700 (12K) carbon fiber bundles produced by Toray Corporation of Japan were used, and the carbon fiber bundles were passed through the liquid phenolic resin at a wire speed of 18mm / s, dried and cut to obtain a modified 25mm length. carbon fiber. Phenolic resin powder with particle size 99.5%, silicon powder with average particle size of 30nm, short carbon fiber with 25mm and absolute ethanol by mass percentage: 36% carbon fiber, 5% silicon powder, 57% After the phenolic resin and 2% absolute ethanol are mixed evenly, they are put into the designed mold, and the pressure is 2.0Mpa and the temperature is 140℃. 1.24g / cm 3 The carbon fiber reinforced blank (CFRP) has 36 cooling channels. The carbon fiber reinforced green body (CFRP) was carbonized for 60h under nitrogen protection, the pressure was 0.1Mpa, and the maximum temperature was 600°C to obtain a C / C porous body; then the C / C porous body was machined to obtain countersunk holes and then put into Imm...

Embodiment 3

[0061] The PAN type XK-24-1 (24K) carbon fiber bundle produced by Dalian Xingke Carbon Fiber Co., Ltd. was used, and the carbon fiber bundle was passed through the liquid resin at a wire speed of 15mm / s, dried and cut to obtain a length of 30mm. Modified carbon fiber, the liquid resin is composed of liquid furan resin and liquid epoxy resin in a mass ratio of 1:1. Asphalt powder with an average particle size of 0.3mm, silicon powder with a purity of ≥99.5%, an average particle size of 50nm, a short carbon fiber of 30mm and anhydrous ethanol by mass percentage: 24% carbon fiber, 7% silicon powder, 65% % asphalt powder and 4% anhydrous ethanol are mixed evenly, then put into the designed mold, hot-pressed under the conditions of pressure of 5.0Mpa and temperature of 100℃, holding time of 20min, and then cured at 180℃ for 22h to obtain the density 1.18g / cm 3 The carbon fiber reinforced blank (CFRP) has 32 cooling channels. The carbon fiber reinforced green body is carbonized fo...

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Abstract

The invention relates to a carbon-ceramic composite brake disc and a preparation method thereof and belongs to the technical field of preparation of carbon-ceramic composites and brake discs. The carbon-ceramic composite brake disc comprises the following components by mass percent: 12% to 20% of short carbon fiber, 20% to 45% of matrix carbon, 30% to 55% of SiC and 2% to 6% of Si, wherein the short carbon fiber is 15-30mm in length. The method comprises the following steps: carbonizing a carbon fiber-reinforced blank body with the density of 0.9g / cm<3> to 1.3g / cm<3> so as to obtain a porous carbon / carbon (C / C) body; then performing dipping on the porous C / C body, cross-linking solidification and splitting decomposition so as to generate a SiC base body on the matrix carbon; performing the dipping, the cross-linking solidification and the splitting decomposition again until the density of an obtained C / C-SiC composite blank body reaches 1.6-1.9g / cm<3>; and performing silicon leaching treatment on the C / C-SiC composite blank body and anti-oxidation treatment and assembling, thus obtaining the carbon-ceramic composite brake disc. According to the method provided by the invention, the difficult problem that a metal brake disc is poor in thermal dissipation and abrasion resistance and heavy in weight in the prior art is effectively solved. The preparation method is simple; and the obtained carbon-ceramic composite brake disc is high in thermal stability, light in weight and resistant to abrasion, and cannot generate thermal vibration.

Description

technical field [0001] The invention relates to a carbon-ceramic composite material brake disc and a preparation method thereof, belonging to the technical field of carbon-ceramic composite material and brake disc preparation. Background technique [0002] The braking system is one of the most important systems on a car, and it is also an aspect that car drivers should pay the most attention to. The braking system can ensure that the high-speed performance of the car can be maximized under the premise of safety. At present, different cars use different braking systems, such as four-wheel disc brakes, front discs and rear drums, or front ventilation discs, rear solid discs, etc. Wait. There are so many differences in the structure of automobile brakes, the main difference is the performance of brake heat decay. [0003] Disc brakes are currently the most widely used brakes in automobiles. They have a series of advantages such as relatively simple structure, convenient maint...

Claims

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Application Information

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IPC IPC(8): C04B35/83C04B35/565C04B35/622
Inventor 李专肖鹏黄伯云
Owner HUNAN SHIXIN NEW MATERIALS CO LTD
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